GitLabCVE-2026-18252
GitLab: untrusted functionality included
High7.3CVE-2026-18252 · Published Aug 26, 2026 · updated Aug 31, 2026
GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| GitLab Product | >= 18.9, < 19.1.7 | 19.1.7 |
| >= 19.2, < 19.2.5 | 19.2.5 | |
| >= 19.3, < 19.3.1 | 19.3.1 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-829
More GitLab advisories
All GitLab| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 27 | GitLab AI Gateway: server-side request forgery | High8.2 | 19.0.12+2 more |
| Aug 26 | GitLab: improper authorization | Low3.5 | 19.1.7+2 more |
| Aug 26 | GitLab: denial of service | Medium6.5 | 19.1.7+2 more |
| Aug 26 | GitLab: improper authorization | Medium5.5 | 19.1.7+2 more |
| Aug 26 | GitLab has remediated an issue in GitLab EE affecting all versions from 19.1... | Medium4.3 | 19.1.7+2 more |
| Aug 26 | GitLab: denial of service | Medium6.5 | 19.1.7+2 more |